N521S

N521S is an Aermacchi S-211, a twin-engine jet operated by AVIATION PERFORMANCE SOLUTIONS LLC. SkyMeter has tracked 20 flights totalling 16 hours of airtime via ADS-B. The most frequent segment is KIWA to KIWA. Service window in our records spans 167 days. Of those flights, 8 (40.0%) carry at least one detected incident: a go-around, unstable approach, stall warning, or runway excursion. The Aermacchi S-211 has a maximum takeoff weight of 7,055 lb, light wake category.

About the Aermacchi S-211

The Aermacchi S-211 is a compact Italian twin-jet trainer designed in the early 1980s as an affordable entry-level military jet for air forces with limited budgets. Built by what is now Leonardo, the S-211 was conceived to bridge the gap between piston trainers and frontline fighters, offering genuine jet handling characteristics at a fraction of the cost of larger advanced trainers like the BAE Hawk or Aero L-39. Its tandem cockpit, side-by-side ejection seats, and docile flight envelope made it ideal for ab-initio jet training, and it saw service with the air forces of Singapore, the Philippines, and Haiti during the 1980s and 1990s.

Though production ended in the mid-1990s after fewer than 60 aircraft were built, the type found a second life in the United States civilian market. A handful of S-211s were imported and registered under experimental or restricted categories, operated by private owners and adversary training contractors who valued the aircraft's authentic military jet performance, low operating costs, and agility. These civilian examples often wear striking paint schemes and appear at airshows or provide realistic threat simulation for military exercises.

The S-211's twin Pratt & Whitney JT15D turbofans deliver a top speed of 414 knots and a service ceiling above 42,000 feet, impressive figures for such a light airframe. SkyMeter has tracked flights across airframes and operators, with the largest observed operator.